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Abstract

Disclosed is a method of mounting an antenna on a hand held terminal. It takes advantage of the fact that hand held devices are held at an angle (relative to horizontal) so the user can view the screen. An omnidirectional antenna is mounted on the end of the device opposite from the user, at an angle so that the antenna is vertical when the device is held in the normal position of use (Figure).

Country

United States

Language

English (United States)

This text was extracted from an ASCII text file.

This is the abbreviated version, containing approximately
100% of the total text.

Disclosed is
a method of mounting an antenna on a hand held
terminal. It takes advantage of the fact
that hand held devices are
held at an angle (relative to horizontal) so the user can view the
screen. An omnidirectional antenna is
mounted on the end of the
device opposite from the user, at an angle so that the antenna is
vertical when the device is held in the normal position of use
(Figure).

The angled mounting of the antenna has multiple benefits:
o
Enables an inexpensive omnidirectional end-loaded dipole
antenna to be oriented vertically
during use, maximizing
its effectiveness with vertically
polarized radio waves.
o
Makes the outside of the device appear more sleek and have a
cleaner appearance design, which is
a competitive advantage.
o
Reduces the volume of empty space required between the dipole
antenna and the rest of the
device's electronics. A dipole
cannot simply be placed next to a
grounded metal part without
degrading its function; some
separation between the dipole
and the ground is required. It turns out that the triangular
cross section space behind the
antenna, shown in the middle
drawing of the Figure, is close to
optimal.